1. The power supply is not connected or there is no power, the power cable socket is in poor contact, or the power cable wire diameter is thin or aging.
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2. Also consider whether it is freon depletion
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3. The long-term use of the air conditioner causes the aging of the internal valve plate of the compressor, resulting in the decrease of the transmission power of the compressor resulting in the poor cooling effect of the air conditioner. The air conditioning cooling is normal, but the air conditioning filter has not cleared the dust for more than half a month, and the dust blocks the filter, resulting in a reduction in the circulation air volume.
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4. Turn on the outdoor unit, and when 220 volts is measured, the terminal is displayed. After the power is turned off, the winding resistance of the measured compressor is normal, indicating that the starting capacitor is not charged or discharged.
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5. Air conditioning compressor does not work generally due to the lack of freon as an air conditioning refrigerant. Freon replenishment for air conditioning.
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6. Low pressure relay action, such as insufficient refrigerant in the refrigeration system, resulting in the compressor suction pressure is too low, so that the low pressure relay action, stop the compressor operation.
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7. It may be caused by fluorine deficiency. If the copper horn nut is not tightened when the air conditioner is installed, or the machine has been moved, it may be fluorine deficiency
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8. Change the use environment of the outdoor unit (move away from the high temperature environment or make the air around the outdoor unit more easily circulate)
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9. The outdoor temperature is too high, generally speaking, if the outdoor temperature exceeds 43 degrees, most air conditioners are difficult to transfer indoor heat to the outside, and there is a failure.